Portable debris incinerator

ABSTRACT

A portable incinerator for use in burning debris, for example, obtained in right-of-way clearing operations, has an incinerating region vertically enclosed by a pair of sidewalls and end walls in a rectangular configuration. The container is mounted on a pair of hollow skids which are longitudinally divided into two air channels. The longitudinal sidewalls of the container are formed from two spaced-apart plates which form an air passage. The upper end of the outer plate is open to form an air inlet. The bottom end of the air passage communicates with one of the fluid channels in the skids. Air is drawn through the sidewalls from the top into the first fluid channel in the skids by a fan operably connected to the skid channel. Feed air is supplied to the incinerator through ports in the skids adjacent the bottom of the sidewalls, which ports communicate with the second air channel in the skids. The exhaust from the fan supplies the feed air to the skid channels. The fan exhaust air is also directed to a pair of plenums mounted on top of the sidewalls. These manifolds have ports which direct a curtain of air over the top of the container to prevent smoke and ash from rising out of the container. The fan is mounted adjacent one of the end walls, which is constructed from three parallel spaced plates. The spaces between the three plates form two manifolds for the intake and exhaust from the fan.

United States Patent 1191 Hopkins Jan. 15, 1974 PORTABLE DEBRISINCINERATOR [76] Inventor: Henry R. Hopkins, 7201 92nd St., SE, MerderIsland, Wash. 98040 22 Filed: Aug. 30, 1972 21 Appl. No.: 285,030

[52] US. Cl 110/8 R, 110/19, 110/119 Primary ExaminerKenneth W. SpragueAttorney-Christensen & Sanborn [57] ABSTRACT A portable incinerator foruse in burning debris, for example, obtained in right-of-way clearingoperations,

has an incinerating region vertically enclosed by a pair of sidewallsand end walls in a rectangular configuration. The container is mountedon a pair of hollow skids which are longitudinally divided into two airchannels. The longitudinal sidewalls of the container are formed fromtwo spaced-apart plates which form an air passage. The upper end of theouter plate is open to form an air inlet. The bottom end of the airpassage communicates with one of the fluid channels in the skids. Air isdrawn through the sidewalls from the top into the first fluid channel inthe skids by a fan operably connected to the skid channel. Feed air issupplied to the incinerator through ports in the skids adjacent thebottom of the sidewalls, which ports communicate with the second airchannel in the skids. The exhaust from the fan supplies the feed air tothe skid channels. The fan exhaust air is also directed to a pair ofplenums mounted on top of the sidewalls. These manifolds have portswhich direct a curtain of air over the top of the container to preventsmoke and ash from rising out of the container. The fan is mountedadjacent one of the end walls, which is constructed from three parallelspaced plates. The spaces between the three plates form two manifoldsfor the intake and exhaust from the fan.

23 Claims, 13 Drawing Figures BACKGROUND OF THE INVENTION The presentinvention relates to burning devices and more particularly to anincinerator employing an air curtain, force fed oxygenating air, and aircooled walls.

Objects of the present invention are to provide: an incinerator with aircooled sidewalls; an incinerator with an air curtain for preventingescape of smoke and hot ash and for promoting complete combustion ofdebris in the incinerator; an incinerator with removable end panelssuitable for modular interconnection of a plurality of incinerators, anincinerator which feeds oxygenating air to the burning debris; anincinerator which incorporates intake and exhaust plenums into thecontainer structure; an incinerator which employs a water nozzle toassist in preventing hot ash from escaping the container; an incineratorwith an air cooled, debris supporting grating; and an incineratoremploying auxiliary heat exchangers in the walls for increasing the heatdissipation capacity of the incinerator and also for supplying heat torelated activities.

SUMMARY OF THE INVENTION The present invention provides an incineratorcomprising a housing means defining an incinerating region. The housingmeans includes a wall having a fluid passage therein, a top opening anda bottom structure for supporting material being incinerated. A firstmeans for directing a curtain of air over the incinerator is locatedadjacent the top opening. A second means.

for admitting oxygenating feed air into the housing means is located inthe housing means. A. third means circulates air through the coolingpassage in heat exchange relationship with the wall. In one aspect thethird means is also capable of directing air from the fluid passage toat least one of the first andsgcond means. In another aspect the housingmeans also includes means for supporting the housing means for movementover the ground.

BRIEF DESCRIPTION OF THE DRAWINGS A better understanding of the presentinvention can be acquired by reading the ensuing specification inconjunction with the accompanying drawings, wherein: FIG. 1 is apictorial elevation view of the apparatus of the present invention;

FIG. 7 is an enlarged view in cross-section of one of the innersidewalls;

FIG. 8 is a cross-sectional view of a portion of the apparatus takenalong section line 8-8 of FIG.

FIG. 9 is an enlarged'cross-sectional view, partially broken away, ofthe apparatus of the present invention taken along section lines 9-9 ofFIG. 4;

FIG. 10 is a cross-sectional view of FIG. 5 taken ts sctjqnlt'e.19:19am...

2 FIG. 11 is a cross-sectional view of FIG 5 taken along section linell-1I;

FIG. 12 is an isometric view of a portion of one of the sidewallsshowing the installation of an auxiliary heat exchanger; and

FIG. 13 is a pictorial isometric view of the apparatus of the presentinvention employing an auxiliary heat exchanger.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to FIGS. 1 and 2,the incinerator, generally designated 10, includes on a first sectionsupported by skids 12 and a second section supported by skids 14. Anincinerating container 16 is mounted on the skids l2 of the firstsection. The skids 14 support a centrifugal fan 18, an engine 19 todrive the fan, intake duct 20 and exhaust duct 22. The intake andexhaust ducts 20 and 22 connect with a manifold 24 connected to andsupported by the first section including skid 12. The intake ducts 20connect with a manifold 28 incorporated into the container 16 whichdraws air through sidewalls 26 of the container 16. This air is utilizedfor cooling the sidewall 26. The exhaust 'ducts 22 connect with amanifold 24 in turn connected .78 mounted on the top of the sidewalls26. The plenums 78 contain ports which direct a curtain or air over thetop of the container 16 to prevent smoke and hot ash from escaping fromthe incinerator l0. Debris is supported by a grating 30 incorporatedinto the container 16,.

In the isometric view of FIG. 3 the fan 18 and engine 19 have beenomitted for clarity. The skid 12 of the incinerator 10 is composed offour elongate plates formed into a rectangular cross-section. Since theincinerator is substantially symmetrical about a vertical longitudinalplane, the same reference numbers will be used to describe similarstructures on each side of the apparatus. Skids 14 are connected toskids 12 by suitable fastening means and can be constructed to beremovable if desired. A plate 34 divides each of the skids 12 into twofluid passageways 36 and 38. Structural beams 40 and mounted on top ofeach of the skids 12. An outer sidewall 42 and an inner sidewall 44 areaffixed to the upright channels 40. The outer and inner sidewalls 42 and44 are spaced-apart and held apart by spacing channels 46. The spacebetween the outer and inner sidewalls 42 and 44 forms an air passageway48 along the entire length of height of each of the sidewalls 26. A slot50 is located in the upper portion of each of the outer sidewalls 42.Slot 50 serves as an air intake for the air passageway 48 in thesidewalls 26. The bottom of the air passageway 48 communicates throughopenings 52 with passageway 36 in the skids 12.

,Ml. A.- ...v. .i v V V c Manifolds 28 and 24 form part of an end wallstruc- The passageway 36 communicates with an opening 54 in the end ofskids 12. Opening 54 in turn is in fluid communication with manifold 28which connects through coupling 56 to the intake ducts 20 of the fan 18(shown in FIG. 1). Exhaust from the fan 18 is fed from the exhaust duct22 into opening 60 of manifold ture, generally designated 64. A portionof the fan exhaust enters a lower cham be r 66 of manifold 24 and fold24 in theend w allfiueture 64. Divider plate 74 serves to split the airfiow entering opening 60 between the lower chamber 66 and an upperchamber 76. The exhaust air from the fan entering the upper chamber 76of manifold 24 enters a pair of plenums 78 mounted on top of each Bfiiisidewalls 26. The air enters the ple nums 78 through openings 80. Aplurality of ports 82 are located in the plenums 78 to direct thepressurized air within the plenums inwardly and at a predetermined angledownwardly from the top of the sidewalls 26. The air flowing from ports82 will meet substantially in the center of the container 16 to form anair curtain over burning debris within the container.

An end wall 84 joins the far ends of sidewalls 26. The end wall 84includes a vertical plate closing off the end of the container 16 and aplurality of vertical fins 86. Fins 86 maintain debris a fixed distancefrom the inner surface end wall 84. Fins 86 will also enhance cooling ofthe end wall 84. Although not shown, end wall 84 is removably fixed tosidewalls 26 so that additional containers 16 including skids 12 can bejoined in a modular fashion to double the capacity of the incinerator.

A plumbing network including a pipe 88 surrounds the top of thecontainer 16. Four nozzles 90 situated at each of the upper corners ofthecontainc IQ provide a sp ray of nohfiamniable li duid substantiallyover the entire top portion of the container 16. The nonflammable liquidis prefereably water supplied through pipe 92 from a suitable source.The water spary serves to hold down the particulate fly ash and othermatter which can escape through the air curtain provided by air from theports 82.

The incinerator is designed so that the air used for cooling the wallsof the container 16 is in turn utilized for the air curtain and foroxygenating feed air. Since the air used in cooling the walls ofcontainer 16 is heated, it will not have to be heated again before it isfed to the interior of the container 16 as feed air. This results inconservation of energy and more complete burning than could be realizedifa cold air source were utilized for the feed and curtain air.

The material of construction for the preferred embodiment is a highquality steep plate. If desired, a heat resistant paint can be appliedto exposed surfaces to prevent rust formation. Because the apparatus isdesigned to be air cooled, the necessity of using firebrick liners hasbeen eliminated. This decreases the overall weight of the apparatus andlikewise significantly reduces maintenance problems.

In the plan and elevation views of FIGS. 4 and 5, the exhaust conduit 22from the fan 18 connects the opening 60 in the manifold 24. The intakeduct ii cludes a riser 96 which connects to a junctionbox 98.JuriEtTon'bbx 08 bastards anadjustable slide valve 100 which can beadjusted from a fully clo sedto a fully open po sition. Riser96Eoritains a valve 101 which can be adjusted from a closed to an openposition to allow direct intake of atmospheric air. The volume of airflowing through the sidewall cooling passageway 48 can be modulated bymanual adjustment of valves and 101 to vary the mixture of air from theside walls and from the atmosphere. Junction box 98 connects withanother horizontal conduit 102 which connects to the intake port of thefan 18 (FIG. 1). The fan 18 is supported on a pallet 104 in turnsupported by the rear skids 14.

A plurality of spaced tubes 106 connect with the skids 12. The interiorair passages 108 in tubes 106 communicate with the passageways 38 in theskids 12. The ends 110 of the tubes 106 are alternately tapered inopposite directions so that air from the passageway 38 will passalternately 7 through the tubes 106 in alternate directionsfhusprovidihg cooling refine tubes 106. Longitudinal rails 112 rest at rightangles on top of tubes 106. Rails 112 support the debris dropped in thecontainer 16 from the top. Mr

As seen in FIG. 6, the tubes 106 and rails 112 provide a grating forburning debris. Preferably, the entire container 16 is positioned overan earthen pit 114 or the like, into which ash from burned debris candrop. Of course, if desired, a plurality of log chains or the like, canbe interconnected and positioned under the container 16. These logchains can extend outwardly from under the container 16 so that they canbe pulled back and forth, thus providing a means for removing ash fromunder the container 16.

A fire is started inside the container 16 by first starting the fan toform the air curtain and to feed air to the interior of the container. Asuitable flame source is then inserted through tubes 115 mounted insidewalls 26. A door 116 is pivotally mounted on walls 26 to covertubsTiS after the fire has been started. Thereafter, the fire isself-sustaining as long as additional fuel in the form of debris isadded to the fire.

The constructon of sidewalls 26 can be seen in the cross-section view ofFIG. 6. The inner walls 44 are mounted on top of the skid section 12 andare fastened thereto. Likewise, the bottom of the outer walls 42 arespaced from and similarly fastened to the top of skid section 12. Theair passageway 48 between the inner and outer walls 42 and 44communicates with the slot 50 provided at the upper end of the walls 26.Air is drawn in the direction of arrows 118 downwardly through thesidewalls 26 and into the air passageways 36 in the skids 12.

Air supplied from manifold 24 (FIG. 3) to the air curtain plenums 78 isdirected from the ports 82 outwardly between vanes 120 and 122.Referring to the enlarged view of FIG. 7, the upper vane 120 is fixedlymounted to plenums 78 and is reinforced by flanges 124. The lower vane122 is pivotably mounted by suitable hinges 126 to the plenums 78. Anadjustment bracket 128 allows for an angle variation in the lower vane122. Bracket 128 is of conventional construction and includes a slottedbar pivotally connected to plenums 78 and a threaded fastener connectedto vane 120 and slidably mounted in the slotted bar. Thus air flowingfrom ports 82 past the vanes 120 and 122 can be adjusted to flow from aslightly downward angle to a relatively sharp downward angle. Theadjustable flow direction of the curtain air allows the depth of the aircurtain to be varied depending upon, among other things, the type ofmaterial being burned and wind conditions.

The air forced into passageway 38 in skids 12 is ejected from ports 70formed in theupper and inner side of the skids 12. A deflecting vane 132directs the air issuing from port 70 in the direction of arrow 130. Thisassures that oxygenating feed air is directed toward the center of thecontainer 16 to assure full and complete burning of debrisresting on therails U2.

Referring now to FIGS. 8 and 9, the fan exhaust conduit 22 is shownconnected to the manifold 24 by suitable fasteners 136 at opening 60.Air entering manifold 24 through opening 68 is divided by divider plate74 and flows into the upper chamber 76 and the lower chamber 66.

The air from the upper chamber 76 flows into the air curtain plenums 78.The air from the lower chamber 66flows into the passageways 38 (FIGS. 6and 7) which supply the feed air nozales 70. The heated air which flowsdownwardly through passageways 48 in the sidewalls 26 passes throughports 1136 into the passageway 36 in the skid 12. The air flowsvia'ssefi'i'ng 54into thei n ani fold 2847675 3665751 16. 6, the dividerbetween passageways 36 and 38 in the skids 12 is mounted at an angle. Awarped plate 138 connects the divider plate 34 with the partition 140forming part of the opening 68.

Referring now to the cross-sectional view of FIGS. and 11, theconstruction of the end wall structure 64 is illustrated. The inner wall142 has on its inner side a plurality of ribs 86 (FIG. 5) similar to theopposite end wall 84. Deflector vanes 114 are suitably mounted to directthe air flow toward the openings 80 in the air curtain plenums 78. Thedivider plate 74 is horizontally situated and affixed to the inner wall142. A second set of vanes 148 direct the air flowing below dividerplate 74 toward the openings 68 into the passageways 38 of the skids 12.

As shown in FIG. 11, an outer wall 150 forms the outer casing formanifold 24, which communicates with the opening 54 in the top of skids12 to withdraw air from the passageways 36. The opening 60 admits airfrom the fan to the upper and lower chambers 76 and 66 of the manifold24. The housing 152 which forms opening 60 extends outwardly a smalldistance from the manifold 24. A slot (not shown) between housing 152and wall 150 provides a guideway for a gate 154. Gate 154 can beadjusted in the direction of arrows 156 into various positions tomodulate the flow through opening 60 into the manifold 24.

Referring now to FIG. 12 an alternate embodiment to the presentinvention is shown. In this embodiment, the construction of thecontainer 158 is similar to that previously described, however, theinner wall 160 has formed in it a plurality of vertical slots 162 whichare horizontally spaced from each other. Mounted between the inner wall160 and the outer walls 164 are heat exchanger coils 166. Hot gases fromdebris burning within container 158 pass through the slots 162 in heattransfer relationship with the heat exchanging coils 166 via inlet andoutlet conduits 168 and 170 (FIG. 13). A heat transfer fluid flowingthrough coils 166 will provide cooling of the walls of the container158. In this embodiment of the invention, an additional heat exchanger170 is connected to the inlet and outletconduits 168 and 170. Ifdesired, road oil or other fluid to be heated can be pumped through theheat exchanger 172. Thus, the provision of an auxiliary heat exchanger,such as heat exchange coils 166, provides a dual function, additionaland increased cooling for the incinerator and the use of heat whichwould otherwise be wasted to the atmosphere.

The present invention has been described in relation to a preferredembodiment and an alternate therefor. Those of ordinary skill in theart. after reading the fore going specification, will be able to effectvarious changes, alternations, and substitutions of equivalents withoutdeparting from the original concept of the invention. It is, therefore,intended that the invention be limited only by the definition containedin the apes qei eim What is claimed is:

1. A portable incinerator comprising:

a pair of spaced-apart inner sidewalls, and a pair of spaced-apart endwalls connected to said sidewalls vertically enclosing an incineratingregion,

a second sidewall spaced outwardly from each of said inner sidewalls toform a passageway therebetween, said second sidewallsjhaving a fluidintake opening located adjacent the top thereof,

a skid mounted under each of said sidewalls, each said skid having aplurality of ports located adjacent said inner sidewalls for directingoxygenating air into said region, each said skid having a first fluidchannel therein communicating with each said passageway and a secondfluid channel therein communicating with said oxygenating air ports,

a plurality of bars spanning the space between and connected inspaced-apart relationship to said skids,

a plenum mounted on the top of each of said sidewalls having a pluralityof ports therein and including vane means for directing a curtain of airfrom said ports across the top of said incinerating region,

fan means having an exhaust port and an intake port, said exhaust portin fluid communication with each of said plenum and said second fluidchannel in each said skid, said intake port in fluid communication withsaid first fluid channels in each said skid.

2. An incinerator comprising:

housing means defining an incinerating region, said housing meansincluding a wall having a fluid passage therein, a top opening and abottom structure for supporting material being incinerated,

first means located adjacent said top opening for directing a curtain ofair over said incinerating region,

second means located in said housing means for admitting oxygenatingfeed air into said housing means, and

third means for circulating cooling air through said fluid passage inheat exchange relationship with said wall and for directing air fromsaid fluid passage to at least one of said first and second means.

3. The incinerator of claim 2 further comprising:

fourth means located adjacent said top opening for directing a spray ofnonflammable liquid over said supportstriicturel' V 4. The incineratorof claim 3 wherein said fourth means is so constructed in relation tosaid first means to direct said spray above said curtain of air.

5. The incinerator of claim 2 wherein said wall comprises a pair ofspaced sidewalls connected to a pair of spaced endwalls, each of saidsidewalls comprising an inner wall and an outer wall spaced outwardlyfrom said inner wall, said inner and outer walls defining a fluidpassage therebetween.

6. The incinerator of claim wherein said third means comprises a fanmeans having an intake and an outlet, said intake being in fluidcommunication with Said flu d Pa sa e in ach isaid sidew lls Said a lbeing in fluid communication with both said first means and said secondmeans to supply air thereto.

7. The incinerator of claim 6 wherein said first means comprises:

plenum means mounted on each of said sidewalls adjacent said topopening, said outlet of said fan means being in fluid communication witheach of said plenum means, each of plenum means having a plurality ofopenings extending in a longitudinal array along said top openings,

a first vane mounted on each of said plenum means above said openingsand a second vane mounted on each of said plenum means below saidopenings, said first and second vanes so constructed in relation to saidopenings to direct air issuing from said openings above saidincinerating region to form said curtain of air, and

means on each of said plenum means mounting one of said first and secondvanes for adjustment toward and away from the other of said first andsecond vanes to vary the height of said air curtain above said region.

8. An incinerator comprising:

housing means defining an incinerating region, said housing meansincluding a pair of spaced sidewalls and a pair of spaced endwallsconnected to said sidewalls, a top opening, a first skid mounted underone of said pair of sidewalls and a second skid mounted under the otherof said pair of sidewalls, and a bottom structure for supportingmaterial to be incinerated, said bottom structure comprising a pluralityof bars spaced from each other and connected to said skids, each of saidsidewalls having a fluid passage therein,

first means located adjacent said top opening for directing a curtain ofair over said incinerating region,

second means located in said housing means for directing oxygenatingfeed air into said incinerating region, and

third means for circulating air through said fluid passages in heatexchange relationship with said sidewalls.

9. The incinerator of claim 8 wherein each skid has a first fluidchannel therein, said first fluid channel being in fluid communicationwith the fluid passage in the respective sidewall under which said skidis mounted, and wherein said third means comprises fan means having anintake and an outlet, said intake being in fluid communication with saidfirst fluid channel in each skid.

10. The incinerator of claim 9 wherein each skid has a second fluidchannel therein, said second fluid channel in each skid being in fluidcommunication with said outlet of said fan means and being in fluidcommunication with said second means, said fan means thereby capable ofsupplying said second means with air.

11. The incinerator of claim 10 wherein said second means comprises aplurality of openings in each skid, said openings placing said secondfluid channel in each skid in fluid communication with said incineratingregion, and a vane so associated with said openings on each skid todirect air from said openings toward said incinerating region.

12. The incinerator of claim 10 further comprising means for supportingsaid fan means including first and segond sk id eglension members, saidfl s t skid extension member mating with an end of said first skid andsaid second skid extension member mating with an end of said secondskid, each skid extension member having third and fourth fluid channelstherein, said intake of said fan means being in fluid communication withsaid first fluid channels through respective one of said third fluidchannels, said second channels through respective ones of said fourthfluid second channels through respective ones of said fourth fluidchannels.

13. The incinerator of claim 12 wherein said means for supporting saidfan means is positioned adjacent one of said endwalls, said one endwallcomprising a first wall portion and a second wall portion spacedoutwardly from said first wall portion, said first and second wallportions defining a fifth fluid channel therebetween, said inlet of saidfan means being in fluid communication with said third fluid channelsthrough said fifth fluid channel.

14. The incinerator of claim 13 wherein said one endwall furthercomprises a third wall portion spaced outwardly from said second wallportion, said second and third wall portions defining a sixth fluidchannel therebetween, said outlet of said fan means being in fluidcommunication with said fourth fluid channels through said sixth fluidchannel.

15. The incinerator of claim 8 wherein each of said bars has ends and apassage therethrough, said passage being in fluid communication withsaid second fluid channels in said skids, each of said bars having meanson the ends thereof for directing air from said second fluid channelsthrough said passage in each of said bars.

portable incinerator comprising:

housing means defining an incinerating region, said housing meansincluding a wall having an air passage therein, a top opening, a bottomstructure for supporting material in said incinerating region, and meansfor supporting said housing means for movement over the ground,

first means located adjacent said top opening for directing a curtain ofair over said incinerating region,

second means located in said housing means for directing oxygenatingfeed air into said incinerating region, and

third means for circulating air through said passage in heat exchangerelationship with said wall.

17. The incinerator of claim 16 wherein said housing means comprisesfirst and second spaced sidewalls connected to a pair of spacedendwalls, said first and second sidewalls each having an air passagetherein, said housing means including first and second members forming aportion of said first and second sidewalls, respectively, each of saidfirst and second members having a first air channel therein, said firstair channel in said first member being in fluid communication with saidair passage in said first sidewall, said first air chan' nel in saidsecond member being in fluid communication with said air passage in saidsecond sidewall, each of said sidewalls having an air intake in fluidcommunication with said air passage, and wherein said third 7 meanscomprises a fan means having an intake and an outlet, said intakebeinginfluid communication with each of said first air channels.

18. The incinerator of claim 17 wherein each of said first and secondmembers has a second air channel therein, said second means being influid communica- F P hfi dwonqat shawl id m qtpi said fan means being influid communication with each said second air channel thereby supplyingair from said air passages to said second means.

19. The incinerator of cliam 17 wherein the outlet of said fan means isin fluid communication with said first means thereby supplying air fromsaid air passages to said first means.

20. The incinerator of claim 18 wherein said second means comprises aplurality of spaced apertures in each of said firstand second members,said apertures being adjacent said incinerating region, said secondmeans further comprising a vane so associated with said apertures oneach of said members to direct air issuing from said apertures towardsaid incinerating region 21. The incinerator of claim 17 furthercomprising valve means associated with said first air channels foradjusting the flow of air therethrough.

22. The incinerator of claim 18 further comprising valve meansassociated with said second air channels for adjusting the flow of airtherethrough.

23. The incinerator of claim 16 further comprising auxiliary heatexchange means mounted in heat exchange relationship with said wall, andmeans for circulating a heat exchanging fluid through said auxiliaryheat exchange means.

3? UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent 'No.3,785,303 Dated January 15, 1974 'Inventor(s) Hefiry R. Hopkins It iscertified that error appears in the above-identified patent and thatsaid Letters Patent are hereby corrected as shown below:

F- Claim 12 (Column 8) line 12, "one" should read I --ones--.-

Claim 12 (Column 8) lines 13 through 15 should be deleted and thefollowing substituted therefor -fluid channels, said outlet of said fanmeans being in fluid communication with said second channels throughrespective ones of said fourth fluid channels.--

Signed and sealed this 7th day of May 1971;.

(SEAL) Atte st:

EDWARD Z LFLETCI RJR. v C. MARSHALL DAIIN Atte sting OfficerCommissioner of Patents

1. A portable incinerator comprising: a pair of spaced-apart innersidewalls, and a pair of spacedapart end walls connected to saidsidewalls vertically enclosing an incinerating region, a second sidewallspaced outwardly from each of said inner sidewalls to form a passagewaytherebetween, said second sidewalls having a fluid intake openinglocated adjacent the top thereof, a skid mounted under each of saidsidewalls, each said skid having a plurality of ports located adjacentsaid inner sidewallS for directing oxygenating air into said region,each said skid having a first fluid channel therein communicating witheach said passageway and a second fluid channel therein communicatingwith said oxygenating air ports, a plurality of bars spanning the spacebetween and connected in spaced-apart relationship to said skids, aplenum mounted on the top of each of said sidewalls having a pluralityof ports therein and including vane means for directing a curtain of airfrom said ports across the top of said incinerating region, fan meanshaving an exhaust port and an intake port, said exhaust port in fluidcommunication with each said plenum and said second fluid channel ineach said skid, said intake port in fluid communication with said firstfluid channels in each said skid.
 2. An incinerator comprising: housingmeans defining an incinerating region, said housing means including awall having a fluid passage therein, a top opening and a bottomstructure for supporting material being incinerated, first means locatedadjacent said top opening for directing a curtain of air over saidincinerating region, second means located in said housing means foradmitting oxygenating feed air into said housing means, and third meansfor circulating cooling air through said fluid passage in heat exchangerelationship with said wall and for directing air from said fluidpassage to at least one of said first and second means.
 3. Theincinerator of claim 2 further comprising: fourth means located adjacentsaid top opening for directing a spray of nonflammable liquid over saidsupport structure.
 4. The incinerator of claim 3 wherein said fourthmeans is so constructed in relation to said first means to direct saidspray above said curtain of air.
 5. The incinerator of claim 2 whereinsaid wall comprises a pair of spaced sidewalls connected to a pair ofspaced endwalls, each of said sidewalls comprising an inner wall and anouter wall spaced outwardly from said inner wall, said inner and outerwalls defining a fluid passage therebetween.
 6. The incinerator of claim5 wherein said third means comprises a fan means having an intake and anoutlet, said intake being in fluid communication with said fluid passagein each of said sidewalls, said outlet being in fluid communication withboth said first means and said second means to supply air thereto. 7.The incinerator of claim 6 wherein said first means comprises: plenummeans mounted on each of said sidewalls adjacent said top opening, saidoutlet of said fan means being in fluid communication with each of saidplenum means, each said plenum means having a plurality of openingsextending in a longitudinal array along said top opening, a first vanemounted on each of said plenum means above said openings and a secondvane mounted on each of said plenum means below said openings, saidfirst and second vanes so constructed in relation to said openings todirect air issuing from said openings above said incinerating region toform said curtain of air, and means on each of said plenum meansmounting one of said first and second vanes for adjustment toward andaway from the other of said first and second vanes to vary the height ofsaid air curtain above said region.
 8. An incinerator comprising:housing means defining an incinerating region, said housing meansincluding a pair of spaced sidewalls and a pair of spaced endwallsconnected to said sidewalls, a top opening, a first skid mounted underone of said pair of sidewalls and a second skid mounted under the otherof said pair of sidewalls, and a bottom structure for supportingmaterial to be incinerated, said bottom structure comprising a pluralityof bars spaced from each other and connected to said skids, each of saidsidewalls having a fluid passage therein, first means located adjacentsaid top opening for directing a curtain of air over said incineratingregion, second means located in said housing meaNs for directingoxygenating feed air into said incinerating region, and third means forcirculating air through said fluid passages in heat exchangerelationship with said sidewalls.
 9. The incinerator of claim 8 whereineach skid has a first fluid channel therein, said first fluid channelbeing in fluid communication with the fluid passage in the respectivesidewall under which said skid is mounted, and wherein said third meanscomprises fan means having an intake and an outlet, said intake being influid communication with said first fluid channel in each skid.
 10. Theincinerator of claim 9 wherein each skid has a second fluid channeltherein, said second fluid channel in each skid being in fluidcommunication with said outlet of said fan means and being in fluidcommunication with said second means, said fan means thereby capable ofsupplying said second means with air.
 11. The incinerator of claim 10wherein said second means comprises a plurality of openings in eachskid, said openings placing said second fluid channel in each skid influid communication with said incinerating region, and a vane soassociated with said openings on each skid to direct air from saidopenings toward said incinerating region.
 12. The incinerator of claim10 further comprising means for supporting said fan means includingfirst and second skid extension members, said first skid extensionmember mating with an end of said first skid and said second skidextension member mating with an end of said second skid, each skidextension member having third and fourth fluid channels therein, saidintake of said fan means being in fluid communication with said firstfluid channels through respective one of said third fluid channels, saidoutlet of said fan means being in fluid communication with said secondchannels through respective ones of said fourth fluid channels.
 13. Theincinerator of claim 12 wherein said means for supporting said fan meansis positioned adjacent one of said endwalls, said one endwall comprisinga first wall portion and a second wall portion spaced outwardly fromsaid first wall portion, said first and second wall portions defining afifth fluid channel therebetween, said inlet of said fan means being influid communication with said third fluid channels through said fifthfluid channel.
 14. The incinerator of claim 13 wherein said one endwallfurther comprises a third wall portion spaced outwardly from said secondwall portion, said second and third wall portions defining a sixth fluidchannel therebetween, said outlet of said fan means being in fluidcommunication with said fourth fluid channels through said sixth fluidchannel.
 15. The incinerator of claim 8 wherein each of said bars hasends and a passage therethrough, said passage being in fluidcommunication with said second fluid channels in said skids, each ofsaid bars having means on the ends thereof for directing air from saidsecond fluid channels through said passage in each of said bars.
 16. Aportable incinerator comprising: housing means defining an incineratingregion, said housing means including a wall having an air passagetherein, a top opening, a bottom structure for supporting material insaid incinerating region, and means for supporting said housing meansfor movement over the ground, first means located adjacent said topopening for directing a curtain of air over said incinerating region,second means located in said housing means for directing oxygenatingfeed air into said incinerating region, and third means for circulatingair through said passage in heat exchange relationship with said wall.17. The incinerator of claim 16 wherein said housing means comprisesfirst and second spaced sidewalls connected to a pair of spacedendwalls, said first and second sidewalls each having an air passagetherein, said housing means including first and second members forming aportion of said first and second sidewalls, respectively, each of saidfirst and sEcond members having a first air channel therein, said firstair channel in said first member being in fluid communication with saidair passage in said first sidewall, said first air channel in saidsecond member being in fluid communication with said air passage in saidsecond sidewall, each of said sidewalls having an air intake in fluidcommunication with said air passage, and wherein said third meanscomprises a fan means having an intake and an outlet, said intake beingin fluid communication with each of said first air channels.
 18. Theincinerator of claim 17 wherein each of said first and second membershas a second air channel therein, said second means being in fluidcommunication with each said second air channel, said outlet of said fanmeans being in fluid communication with each said second air channelthereby supplying air from said air passages to said second means. 19.The incinerator of cliam 17 wherein the outlet of said fan means is influid communication with said first means thereby supplying air fromsaid air passages to said first means.
 20. The incinerator of claim 18wherein said second means comprises a plurality of spaced apertures ineach of said first and second members, said apertures being adjacentsaid incinerating region, said second means further comprising a vane soassociated with said apertures on each of said members to direct airissuing from said apertures toward said incinerating region.
 21. Theincinerator of claim 17 further comprising valve means associated withsaid first air channels for adjusting the flow of air therethrough. 22.The incinerator of claim 18 further comprising valve means associatedwith said second air channels for adjusting the flow of airtherethrough.
 23. The incinerator of claim 16 further comprisingauxiliary heat exchange means mounted in heat exchange relationship withsaid wall, and means for circulating a heat exchanging fluid throughsaid auxiliary heat exchange means.